Jochumsen Mads Ryø, Bouchelouche Kirsten
Department of Nuclear Medicine and PET-Centre, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.
Department of Nuclear Medicine and PET-Centre, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.
Semin Nucl Med. 2024 Jan;54(1):39-45. doi: 10.1053/j.semnuclmed.2023.07.001. Epub 2023 Jul 22.
Prostate-specific membrane antigen PET/CT for primary staging of prostate cancer is becoming increasingly popular due to simultaneous assessment of whole-body disease burden, with superior sensitivity and specificity for detecting metastases compared to conventional imaging. PSMA PET in combination with multiparametric MRI (mpMRI) improves the sensitivity of assessment of extra-prostatic extension and seminal vesicle invasion compared to mpMRI alone, and may serve as a second line modality for image-guided biopsy in selected patients with negative mpMRI and/or negative primary biopsies. The superior diagnostic accuracy of PSMA PET/CT affects clinical decision-making with a change of clinical management in one-fourth of patients compared to conventional imaging. However, at present, the effect of implementing PSMA PET/CT for primary staging on patient outcomes is not clear, and prospective studies are warranted. There are several PSMA tracers with similar performance and minor individual pharmacokinetic differences such as higher rate of unspecific bone uptake with 18F-PSMA-1007, but on the other hand, lower urinary excretion, which could give an advantage in the detection of local recurrence. Proper training of the reporting physicians and knowledge of the pitfalls of the specific PSMA tracer used is of utmost importance for high-quality reading. We aim to provide an overview of the current literature and an update on the status of PSMA PET/CT for primary staging of prostate cancer.
前列腺特异性膜抗原PET/CT用于前列腺癌的初始分期正变得越来越流行,因为它能同时评估全身疾病负担,与传统成像相比,在检测转移方面具有更高的敏感性和特异性。与单独的多参数MRI(mpMRI)相比,PSMA PET联合mpMRI可提高对前列腺外扩展和精囊侵犯评估的敏感性,并且对于mpMRI阴性和/或初次活检阴性的特定患者,可作为图像引导活检的二线检查方法。与传统成像相比,PSMA PET/CT更高的诊断准确性影响了四分之一患者的临床决策,改变了临床管理。然而,目前,将PSMA PET/CT用于初始分期对患者预后的影响尚不清楚,有必要进行前瞻性研究。有几种性能相似且个体药代动力学差异较小的PSMA示踪剂,例如18F-PSMA-1007的非特异性骨摄取率较高,但另一方面,其尿液排泄较低,这可能在检测局部复发方面具有优势。对报告医生进行适当培训并了解所用特定PSMA示踪剂的陷阱对于高质量解读至关重要。我们旨在概述当前文献,并更新PSMA PET/CT用于前列腺癌初始分期的现状。